A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.
NSN 5985-01-301-5639
NSN 6685-01-225-9564
NSN 5915-01-609-0624
NSN 6685-01-174-9574
NSN 5945-01-421-1808
NSN 4140-01-652-5868
NSN 5996-00-578-9092
NSN 4140-00-350-5446
NSN 5985-00-104-9809
NSN 5998-00-754-5186
NSN 6610-01-085-6947
NSN 5835-00-092-1136